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Old 03-16-2014, 10:48 PM   #1
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Tpms

Just curious to hear from others who are using a TPMS, how much fluctuation are you getting in tire pressure and temperature while towing?

We've got the 614-G's and I inflate to 110 psi, during travel it's not unusual to see them go up to ~120-122psi and for the temps to rise about ~10-15.

Are any of you seeing similar??
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Old 03-16-2014, 10:52 PM   #2
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It's on my list of things to buy
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Old 03-17-2014, 01:36 AM   #3
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While I don't have them myself, your experience seems normal.

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Old 03-17-2014, 05:36 PM   #4
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I have run tire pressure monitors for several years. I run my trailer tires at 110psi cold. Depending on several conditions there is quite a variance in pressure and temp. I drive 65 under normal conditions. One big difference is outside temperature. Under hot conditions (90-100) they may rise 20 or so psi and up to130+ temp. Which side the sun is on will also cause a variance in pressure between the two sides. Speed can also affect them. We I first put the system on I was a little concerned about them. This is the second camper and truck I have had them on and have found as long as I start out with them at the correct cold pressure, I have had no problem.
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Old 03-17-2014, 10:34 PM   #5
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It's on my list of things to buy
Don't know about you Dave but my list is getting longer!
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Old 03-18-2014, 12:01 AM   #6
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This is funny. Just put mine on this weekend. Tire Minder . I noticed right away that there was a 8 psi diffence. Now i don't know whether to belive my Gage or not. I guess the reason i bought them is to warn me of a leak or blowout rather that acual pressure.
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Old 03-18-2014, 12:22 AM   #7
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My psi & temps vary as Rcflame indicated. Also found psi varied 'til I got a good digital pressure gauge, the old stick style just not too accurate.b
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Old 03-18-2014, 11:14 PM   #8
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Put nitrogen in your tires it is an inert gas therefore no expanding/pressure changes, some places its free some they charge. It is also a lot better for your tires as it does not deteriorate the inside side walls

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Old 03-18-2014, 11:37 PM   #9
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I had nitrogen in them at one time, and there might be some still in them. It was hard to find places that had it when you had to add some so I just started using regular air. I don't know if nitrogen will become popular enough to make it more available. If it does I may put it in again. However it does change pressure during temperature changes. The following is copied from Tire Rack Tire Information. I had pressure changes when I used straight nitrogen.

Nitrogen is a gas and is still affected by changes in ambient temperature (about one psi for every 10 Fahrenheit). Nitrogen filled tires will require pressure be added during the fall/winter months as ambient temperatures and tire pressures drop. Nitrogen is good but can't change the laws of physics
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Old 03-19-2014, 01:25 AM   #10
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Put nitrogen in your tires it is an inert gas therefore no expanding/pressure changes, some places its free some they charge. It is also a lot better for your tires as it does not deteriorate the inside side walls

Dan
What Dan said...whatever fluctuation you have, it's minimal compared to air.
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